Abstract：
Post-harvest loss of fruits and vegetables, and health risks and environmental impact of current plastic packaging warrant new biodegradable packaging. To this end, cellulosic residue from agricultural processing byproducts is suitable due to its renewability and sustainability. Herein, soyhulls cellulosic residue was extracted, solubilized in ZnCl2 solution, and crosslinked with calcium ions and glycerol to prepare biodegradable films. The film combination was optimized using Box Behnken Design and film properties were characterized. The optimized film is translucent and exhibits tensile strength, elongation at break, water vapor permeability, hydrophobicity, and IC50 of 6.3 ± 0.6 MPa, 30.2 ± 0.9%, 0.9 ± 0.3 × 10-10 gm-1 s-1 Pa-1, 72.6°, and 0.11 ± 0.1 g/mL, respectively. The water absorption kinetics follow the Peleg model and biodegrade within 25 days at 24% soil moisture. The film extends the shelf life of raspberries by 6 more days compared to polystyrene film. Overall, the value-added soyhull cellulosic films are advantageous in minimizing post-harvest loss and plastic-related issues, emphasizing the principles of the circular bioeconomy.
摘要：
收获后水果和蔬菜的损失，当前塑料包装的健康风险和环境影响需要新的可生物降解包装。为此,由于其可再生性和可持续性，来自农业加工副产品的纤维素残留物是合适的。在这里，提取大豆壳纤维素残渣，在ZnCl2溶液中溶解，用钙离子和甘油交联制备生物可降解薄膜。使用BoxBehnken设计优化膜组合,并表征膜性质。优化的薄膜是半透明的，并具有拉伸强度，断裂伸长率,水蒸气渗透性，疏水性,IC50为6.3±0.6MPa，30.2±0.9%,0.9±0.3×10-10gm-1s-1Pa-1,72.6°,和0.11±0.1g/mL，分别。吸水动力学遵循Peleg模型，并在24％土壤水分下在25天内生物降解。与聚苯乙烯膜相比，该膜将覆盆子的保质期延长了6天。总的来说,增值的豆壳纤维素薄膜有利于最大限度地减少收获后的损失和塑料相关的问题，强调循环生物经济的原则。
